Full-automatic assembling device with visual inspection function

Abstract

The invention relates to the field of assembly lines, in particular to a full-automatic assembly device with a visual inspection function. The front-section assembling unit is connected with the front-section feeding unit; the rear section assembling unit is arranged at the discharging end of the front section assembling unit; the shell feeding unit is arranged at the feeding end of the rear-section assembling unit; the rear-section feeding unit is arranged at the feeding end of the rear-section assembling unit; the discharging conveying unit is arranged on the rear-section feeding unit; and the visual detection unit is arranged between the front-section assembling unit and the rear-section assembling unit and located above the discharging conveying unit. By optimizing the production path of an assembly line, products are divided into front-section assembly and rear-section assembly, the same-space arrangement of conveying of middle assembly products and discharging of final finished products is achieved, the number of visual detection devices is conveniently reduced, the detection efficiency of a single visual detection device is improved, and high integration and stable operation of the full-automatic assembly device are achieved.

Description

Technical Field

[0001] The present invention relates to the field of assembly lines, and in particular to a full-automatic assembly device with visual inspection. Background Art

[0002] In modern industrial production, full-automatic assembly devices with high integration, multiple functional workstations, and synchronous assembly production at each workstation are widely used. If the workstation settings are reasonable and the assembly rhythm is consistent, the assembly speed and production efficiency of products can be greatly improved.

[0003] However, due to the high degree of automation of full-automatic assembly devices, unqualified products are inevitable on the assembly line. In order to ensure the product qualification rate while achieving a high assembly efficiency, visual inspection devices are usually installed at each workstation of the assembly line. Currently, the operation of full-automatic assembly lines is usually linearly arranged. A single visual inspection device can only detect the products in a certain assembly process. If full-process monitoring is to be achieved and the fault points are to be quickly identified, multiple groups of visual inspection devices need to be set up, which brings great pressure to the staff monitoring the normal operation of the assembly line in the background and is also not conducive to improving the economic benefits of the assembly line. Summary of the Invention

[0004] In view of the problem in the above or the prior art that if full-process monitoring is to be achieved and the fault points are to be quickly identified, multiple groups of visual inspection devices need to be set up, which brings great pressure to the staff monitoring the normal operation of the assembly line in the background, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a full-automatic assembly device with visual inspection.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: A fully automatic assembly device with visual inspection, including a front-end feeding unit; a front-end assembly unit connected to the front-end feeding unit; a rear-end assembly unit provided at the discharge end of the front-end assembly unit; a housing feeding unit provided at the feeding end of the rear-end assembly unit; a rear-end feeding unit provided at the feeding end of the rear-end assembly unit; a blanking conveying unit provided on the rear-end feeding unit; and a visual inspection unit provided between the front-end assembly unit and the rear-end assembly unit and above the blanking conveying unit. Among them, the assembled product is set as an oil cylinder. The front-end assembly unit is used to assemble the plunger assembly of the oil cylinder, and the rear-end assembly unit is used to assemble the complete oil cylinder fittings on the basis of the plunger assembly. The blanking conveying unit is divided into a qualified blanking production line and a defective product production line according to the press-fitting force and displacement detection data of the oil cylinder; the visual inspection unit includes a material conveyor belt provided between the front-end assembly unit and the rear-end assembly unit, and a visual inspection module provided on the material conveyor belt for inspecting the plunger parts discharged from the front-end assembly unit and the oil cylinder parts discharged from the rear-end assembly unit.

[0007] As a preferred embodiment of the fully automatic assembly device with visual inspection of the present invention, among them: the front-end feeding unit includes a plunger feeding assembly provided at the plunger feeding station of the front-end assembly unit, a gear feeding assembly provided at the gear stringing station of the front-end assembly unit, and a bearing feeding assembly I provided at the bearing stringing station of the front-end assembly unit.

[0008] As a preferred embodiment of the fully automatic assembly device with visual inspection of the present invention, among them: the front-end assembly unit includes a front-end assembly workbench, a bearing feeding mechanism I, a gear feeding mechanism, a plunger rod feeding mechanism, a press-fitting mechanism, a defective product blanking mechanism, and a front-end blanking mechanism arranged around the front-end assembly workbench; the bearing feeding mechanism I, the gear feeding mechanism, the plunger rod feeding mechanism, the front-end press-fitting mechanism, and the front-end blanking mechanism respectively correspond to the front-end bearing feeding station, the gear feeding station, the plunger feeding station, the plunger rod assembly station, the defective product discharge station, and the front-end discharge station of the front-end assembly workbench.

[0009] As a preferred embodiment of the fully automatic assembly device with visual inspection of the present invention, among them: the housing feeding unit includes a housing feeding conveyor mechanism provided at the housing feeding station of the rear-end assembly unit, a dust suction bin provided at the feeding end of the housing feeding conveyor mechanism, and a dust suction mechanism provided on the dust suction bin.

[0010] As a preferred embodiment of the full-automatic assembly device with visual inspection of the present invention, it includes: a rear-section feeding unit, which comprises an oil seal feeding mechanism arranged at the oil seal feeding station of the rear-section assembly unit, a bearing feeding assembly II arranged at the bearing feeding station of the rear-section assembly unit, and a locking feeding assembly arranged at the locking feeding station of the rear-section assembly unit; a chip blowing mechanism is arranged on the locking feeding assembly.

[0011] As a preferred embodiment of the full-automatic assembly device with visual inspection of the present invention, it includes: a rear-section assembly unit, which comprises a rear-section assembly workbench, and a plunger feeding mechanism, a housing feeding mechanism, an oil seal feeding mechanism, a rear-section pressing mechanism, a bearing feeding mechanism II, a locking feeding mechanism, a general assembly dust suction mechanism, and an oil cylinder discharging mechanism arranged around the rear-section assembly workbench; the plunger feeding mechanism, the housing feeding mechanism, the oil seal feeding mechanism, the rear-section pressing mechanism, the bearing feeding mechanism II, the locking feeding mechanism, the general assembly dust suction mechanism, and the oil cylinder discharging mechanism respectively correspond to the front-section plunger feeding station, the housing feeding station, the oil seal feeding station, the oil cylinder assembly station, the rear-section bearing feeding station, the locking feeding station, the dust suction station, and the oil cylinder discharging station of the rear-section assembly workbench.

[0012] Beneficial effects of the full-automatic assembly device with visual detection of the present invention: By optimizing the production path of the assembly line, the total assembly production line of the product is divided into a front-stage assembly unit and a rear-stage assembly unit, reducing the problem that the high degree of automation of the full-automatic assembly device leads to concentrated workstations, resulting in an increase in the defective product rate of the product and difficulty in checking the fault points; at the same time, the transfer of intermediate assembled products during the assembly process, that is, the material conveyor belt between the front-stage assembly unit and the rear-stage assembly unit, and the final product blanking conveyor belt, that is, the blanking transfer unit, are arranged in the same space, and a single visual sensing device is used to realize synchronous visual detection of the transfer of intermediate products and the final products. The visual detection module is located on the material conveyor belt between the front-stage and rear-stage assembly units, and can detect the plunger assembly discharged from the front stage and the complete product discharged from the rear stage at the same time. The visual detection module respectively detects the intermediate products on the front-stage blanking mechanism between the front-stage assembly unit and the rear-stage assembly unit and the final products on the blanking transfer unit. Different from the traditional assembly line detection method of unified detection after assembly is completed, synchronous detection can be realized at the intermediate product, avoiding the inability to determine the wrong assembly points on the assembly line during the visual detection of the completely assembled product. Now, if defective products occur at the intermediate product, the system can conduct a fault investigation on the front-stage assembly unit in advance; at the same time, through the preset pipeline timestamp synchronized with the assembly cycle, the system can associate the product data of the front stage and the rear stage. If defective products occur in the complete products produced by the rear-stage assembly unit, the material transportation from the front-stage assembly unit to the rear-stage assembly unit can be stopped in time, and a fault investigation can be quickly carried out inside the rear-stage assembly unit, realizing segmented fault investigation and positioning of the overall assembly line, facilitating the reduction of the number of visual detection devices, improving the detection efficiency of a single visual detection device, and realizing the high integration and stable operation of the full-automatic assembly device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the front-stage assembly unit of the present invention.

[0016] Figure 3 It is a top view of the front-stage assembly unit of the present invention.

[0017] Figure 4 It is a schematic diagram of the structure of the front-stage assembly unit of the present invention.

[0018] Figure 5 This is a schematic structural diagram of the front-stage assembly workbench of the present invention.

[0019] Figure 6 This is a top view of the rear-stage assembly unit of the present invention.

[0020] Figure 7 This is a timing diagram of the automatic assembly of the oil cylinder of the present invention.

[0021] In the figure: 1. Front-stage feeding unit; 11. Plunger feeding assembly; 12. Gear feeding assembly; 13. First bearing feeding assembly; 2. Front-stage assembly unit; 21. Front-stage assembly workbench; 22. First bearing feeding mechanism; 23. Gear feeding mechanism; 24. Plunger rod feeding mechanism; 25. Front-stage press-fitting mechanism; 26. Front-stage blanking mechanism; 3. Vision inspection unit; 31. Material conveyor belt; 32. Vision inspection module; 4. Blanking transfer unit; 5. Housing feeding unit; 51. Housing feeding conveyor mechanism; 52. Dust suction bin; 53. Dust suction mechanism; 6. Rear-stage feeding unit; 61. Oil seal feeding mechanism; 62. Second bearing feeding assembly; 63. Locking feeding assembly; 631. Chip blowing mechanism; 7. Rear-stage assembly unit; 71. Rear-stage assembly workbench; 72. Plunger feeding mechanism; 73. Housing feeding mechanism; 74. Oil seal feeding mechanism; 75. Rear-stage press-fitting mechanism; 76. Second bearing feeding mechanism; 77. Locking feeding mechanism; 78. Total assembly dust suction mechanism; 79. Oil cylinder blanking mechanism. Detailed implementation manners

[0022] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the drawings of the specification.

[0023] Example 1, referring to Figure 1 , which is the first embodiment of the present invention. This embodiment provides a fully automatic assembly device with vision inspection, which can achieve the synchronous monitoring effect of a single vision inspection device on multiple process points. It includes a fully automatic assembly device with vision inspection, including a front-stage feeding unit 1; a front-stage assembly unit 2 connected to the front-stage feeding unit 1; a rear-stage assembly unit 7 arranged at the discharge end of the front-stage assembly unit 2; a housing feeding unit 5 arranged at the feed end of the rear-stage assembly unit 7; a rear-stage feeding unit 6 arranged at the feed end of the rear-stage assembly unit 7; a blanking transfer unit 4 arranged on the rear-stage feeding unit 6; and a vision inspection unit 3 arranged between the front-stage assembly unit 2 and the rear-stage assembly unit 7 and above the blanking transfer unit 4. Among them, the internal workstations of the front-stage assembly unit 2 and the rear-stage assembly unit 7 are connected in the order of the work process, and the detection range of the vision inspection unit 3 includes the discharge of the front-stage assembly unit 2 and the discharge of the rear-stage assembly unit 7.

[0024] Preferably, by periodically setting each working point of the fully automatic assembly device, it is possible to correspondingly obtain that the output of the front-stage assembly unit 2 is finally assembled and then discharged from the rear-stage assembly unit 7 after a certain fixed time. Therefore, a detection system operation logic is set inside the vision detection unit 3 to perform tracking detection on a single product. The detection logic of the vision detection unit 3 and the control module of the assembly line, as well as the sending of defective product information, are all prior arts and will not be elaborated in the present invention.

[0025] Furthermore, the vision detection unit 3 includes a material conveyor belt 31 arranged between the front-stage assembly unit 2 and the rear-stage assembly unit 7, and a vision detection module 32 arranged on the material conveyor belt 31 for detecting the plunger parts assembled and discharged by the front-stage assembly unit 2 and the cylinder parts discharged by the rear-stage assembly unit. The blanking transfer unit 4 is divided into a qualified blanking assembly line and a defective product assembly line according to the press-fitting force and displacement monitoring data of the cylinder.

[0026] Among them, due to the allocation of the front-stage assembly unit 2 and the rear-stage assembly unit 7 to the overall assembly line, when the real-time detection system of the vision detection unit 3 detects a defective product, the vision detection unit 3 immediately feeds back to the central control module of the assembly line. The vision detection module 32 is located on the front-stage blanking conveyor belt between the front-stage assembly unit 2 and the rear-stage assembly unit 7. The vision detection module 32 can simultaneously detect the plunger assembly discharged from the front stage and the complete product discharged from the rear stage. The vision detection module 32 respectively detects the intermediate products on the material conveyor belt between the front-stage assembly unit 2 and the rear-stage assembly unit 7 and the final products on the blanking transfer unit, which is different from the traditional assembly line detection method of uniformly detecting after assembly is completed. It can achieve synchronous detection at the intermediate product, avoiding the inability to determine the wrong assembly point of the assembly line when performing vision detection on the complete assembled product. Now, if a defective product occurs at the intermediate product, the system can pre-check the front-stage assembly unit 2 for faults; at the same time, by presetting the assembly line timestamp to be synchronized with the assembly cycle, the system can associate the product data of the front stage and the rear stage. If a defective product occurs in the complete product produced by the rear-stage assembly unit 7, the material transportation from the front-stage assembly unit 2 to the rear-stage assembly unit 7 can be stopped in time, reducing the continuous occurrence of defective products, quickly checking for faults inside the rear-stage assembly unit, realizing segmented fault troubleshooting and positioning of the overall assembly line, and effectively improving the fault troubleshooting efficiency of the assembly line. It has more practical value compared to the traditional troubleshooting of the fault points after a defective product is detected by a single vision detection of the complete product.

[0027] Furthermore, a protective frame and a maintenance door are provided on the overall assembly device. Status display lights are provided on both the front-stage assembly unit 2 and the rear-stage assembly unit 7. For the convenience of the staff to debug the assembly line, an operation display screen and control buttons are provided on each group of independent operating mechanisms.

[0028] During the use process, according to the specific assembly process and structure of the product to be assembled, the product is divided into the preliminary assembly of the front section, that is, the front assembly unit 2, and the overall assembly of the rear section, that is, the rear assembly unit 7, to avoid the increase in the defective rate caused by the high integration of the assembly line, reduce the concentration of workstations caused by the high automation of the fully automatic assembly device, and solve the problem that it is difficult to check the fault points due to the increase in the defective rate of the product. The vision detection module 32 respectively detects the intermediate products on the material conveyor belt between the front assembly unit 2 and the rear assembly unit 7, and the final products on the blanking conveyor unit. Different from the traditional assembly line detection method of unified detection after assembly, it can realize synchronous detection at the intermediate product, avoid being unable to determine and locate the wrong assembly points on the assembly line when visually detecting the complete assembled product. Now, if defective products occur at the intermediate product, the system can conduct a fault investigation on the front assembly unit in advance; a general assembly blanking conveyor belt of the rear assembly unit 7 is synchronously set within the material conveying range of the front assembly unit 2 and the rear assembly unit 7, so that the conveying of the intermediate assembled products and the blanking conveying of the final finished products during the assembly process are set in the same space, and a single vision sensing device is used to realize the synchronous vision detection of the intermediate product conveying and the final finished product, which is convenient for reducing the number of vision detection devices, improving the detection efficiency of a single vision detection device, and realizing the high integration and stable operation of the fully automatic assembly device.

[0029] Embodiment 2, referring to Figures 1 to 6 , which is the second embodiment of the present invention. Based on the previous embodiment, the assembled product in this embodiment is set as an oil cylinder. The assembly of the oil cylinder is completed by two devices. Among them, the front assembly unit 2 is used to assemble the plunger assembly, and the front section is the assembly of the shaft, gear, and bearing. The rear assembly unit is used to assemble the complete oil cylinder accessories, including the assembly of the oil cylinder, oil seal, shaft assembly, bearing, and swash plate.

[0030] Furthermore, the front feeding unit 1 includes a plunger feeding component 11 arranged at the plunger feeding station on the front assembly unit 2, a gear feeding component 12 arranged at the gear stringing station on the front assembly unit 2, and a bearing feeding component 13 arranged at the bearing stringing station on the front assembly unit 2.

[0031] Furthermore, the front assembly unit 2 includes a front assembly workbench 21, a bearing feeding mechanism 22, a gear feeding mechanism 23, a plunger rod feeding mechanism 24, a front pressing mechanism 25, a defective product blanking mechanism, and a front blanking mechanism 26 arranged around the front assembly workbench 21; the bearing feeding mechanism 22, the gear feeding mechanism 23, the plunger rod feeding mechanism 24, the front pressing mechanism 25, and the front blanking mechanism 26 respectively correspond to the front bearing feeding station, gear feeding station, plunger feeding station, plunger rod assembly station, defective product discharging station, and front discharging station of the front assembly workbench 21.

[0032] The specific assembly process is as follows: The plunger Tray is loaded through the plunger rod feeding mechanism 24 to achieve the docking of the double-station Tray on the front-stage assembly workbench 21; the gear feeding mechanism 23 is used to realize the feeding of the gear string, and at the same time, the operator hangs the string and arranges the trays; the bearing feeding mechanism 1 22 is used to feed the bearing string, and at the same time, the operator hangs the string and arranges the trays; the front-stage feeding unit 1 is provided with a protective safety frame to achieve early warning of material shortage; each station of the front-stage assembly unit 2 is provided with a material grabbing mechanism, which is convenient for transplanting and feeding each assembly part, and at the same time, the parts are placed on the assembly carrier of the front-stage assembly workbench 21, and the fed bearing is sent to the grabbing position, then the fed gear is grabbed above the fed bearing, and then the shaft is grabbed and inserted into the carrier, and the double stations are carried out synchronously; the front-stage pressing mechanism 25 grabs the plunger of the tray, presses it together with the gear and bearing, and makes a hard height limit to ensure the product size; after the assembly is completed, the vision detection module 32 performs vision detection on the intermediate product on the material conveyor belt between the front-stage assembly unit 2 and the rear-stage assembly unit 7. If defective products are generated at the intermediate product, the system can check the faults of the front-stage assembly unit 2 in advance, and at the same time, the material grabbing mechanism discharges the defective products to make the defective products out of the production line. The material grabbing mechanism grabs the qualified products to the unloading line and guides them to the rear-stage assembly unit 7 for the next overall assembly.

[0033] Furthermore, during the assembly process, the jig is used for secondary positioning at the feeding position of each station; the gear is fed and docked with the positioning groove on the bearing; the shaft is fed and docked with the pre-assembly position; the grabbed shaft is transplanted to the pressing position. The front-stage pressing mechanism 25 presses the bottom of the carrier to provide lifting support and precise positioning, ensuring that the pressing force is on the pressing bracket and not on the front-stage assembly workbench 21; the front-stage assembly workbench 21 is driven by a divider to perform six-station pressing rotation, and a detection position is synchronously set on the front-stage assembly workbench 21 to detect the current state of the product in real time.

[0034] Furthermore, the housing feeding unit 5 includes a housing feeding conveyor mechanism 51 arranged at the housing loading station of the rear-stage assembly unit 7, a dust suction bin 52 arranged at the end of the feeding of the housing feeding conveyor mechanism 51, and a dust suction mechanism 53 arranged on the dust suction bin 52. The dust suction mechanism 53 is provided to prevent the dust electrostatically adsorbed on the housing material from entering the oil cylinder during the assembly process, affecting the sealing performance of the product.

[0035] Furthermore, the rear-stage feeding unit 6 includes an oil seal feeding mechanism 61 arranged at the oil seal loading station of the rear-stage assembly unit 7, a bearing feeding component 2 62 arranged at the bearing loading station of the rear-stage assembly unit 7, and a locking feeding component 63 arranged at the locking loading station of the rear-stage assembly unit 7; a chip blowing mechanism 631 is arranged on the locking feeding component 63.

[0036] Furthermore, the rear assembly unit 7 includes a rear assembly workbench 71, and a plunger feeding mechanism 72, a housing feeding mechanism 73, an oil seal feeding mechanism 74, a rear pressing mechanism 75, a second bearing feeding mechanism 76, a locking feeding mechanism 77, a general assembly dust suction mechanism 78, and an oil cylinder blanking mechanism 79 arranged around the rear assembly workbench 71; the plunger feeding mechanism 72, the housing feeding mechanism 73, the oil seal feeding mechanism 74, the rear pressing mechanism 75, the second bearing feeding mechanism 76, the locking feeding mechanism 77, the general assembly dust suction mechanism 78, and the oil cylinder blanking mechanism 79 respectively correspond to the front plunger feeding station, the housing feeding station, the oil seal feeding station, the oil cylinder assembly station, the rear bearing feeding station, the locking feeding station, the dust suction station, and the oil cylinder blanking station of the rear assembly workbench 71.

[0037] The specific assembly process is as follows: The rear feeding unit 6 is directly connected to the assembly of the plunger frame assembly of the front assembly unit 2, and the intermediate product of the plunger rod assembly produced by the front assembly unit 2 is directly loaded into the carrier; it is manually placed on the conveying line with a positioning tooling, and the material grabbing mechanism realizes the assembly of the oil cylinder housing and the plunger assembly; the oil seal feeding mechanism 61 feeds the oil seal, grabs the oil seal and presses it into the oil cylinder housing, and a laser displacement detection is equipped at the oil seal feeding position to detect the front and back of the oil seal, and the assembly is detected to be in place after the assembly is completed; the rear pressing mechanism 75 performs pressing, so that the carrier is stressed on the pressing frame to complete the bearing pressing; the second bearing feeding component 62 feeds the bearing, and sends it to the lower part of the rear pressing mechanism 75. At this time, the material grabbing mechanism further grabs the bearing to the lower part of the pressing fixed head and adsorbs it on the pressing carrier of the rear pressing mechanism 75. At this time, the swashplate vibrating disk of the locking feeding mechanism 77 feeds the locking, sends it to the upper part of the shaft for assembly, and there are blowing and dust suction devices in the swashplate incoming material channel; the locking feeding mechanism 77 automatically feeds and locks, locks the swashplate and the shaft together, and monitors the torque in the whole process; finally, the assembly is completed on the rear assembly workbench 71, and the general assembly dust suction mechanism 78 is used to adsorb the waste chips and dust in the plunger inner cavity; after the assembly is completed, according to the pressing force and displacement to detect the qualified state of the product, combined with the visual inspection of the visual inspection module 32, the products after the general assembly are respectively placed into different material channels. By synchronizing the preset pipeline timestamp with the assembly cycle, the system can associate the product data of the front and rear sections. If defective products are produced in the complete products generated by the rear assembly unit 7, the material transportation from the front assembly unit 2 to the rear assembly unit 7 can be stopped in time, reducing the continuous occurrence of defective products, quickly troubleshooting the faults inside the rear assembly unit, realizing the segmented fault troubleshooting and positioning of the overall assembly line, and effectively improving the fault troubleshooting efficiency of the assembly line. Compared with the traditional troubleshooting of the fault points after defective products are generated by the single visual inspection of the complete products, it has more practical value.

[0038] Such as Figure 7As shown, the components of the oil cylinder known in the prior art include small bearings, gears, gear shafts, gear bearings, oil cylinder housings, oil seals, large bearings, swash plates, and screw locking. In the above work process, the time stamps of the specific assembly line are as follows: In the front-end assembly unit 2, the feeding time of the single component of the small bearing used for the plunger assembly is 4 seconds, and the caching time is 40 minutes; the feeding time of the single component of the gear is 6 seconds, and the caching time is 30 minutes; the feeding time of the single component of the gear shaft is 5.5 seconds, and the caching time is 30 minutes; the pressing time of the single gear shaft is 5 seconds, and the discharging time of the finished plunger rod is 4 seconds; in the rear-end assembly unit 7, the pressing turntable of the gear bearing takes 2 seconds, the feeding time of the single component of the gear shaft assembly is 4 seconds, the feeding and assembly time of the oil cylinder housing takes 5 seconds, and the caching time is 12 minutes; the feeding and assembly time of the oil seal takes 5 seconds, and the caching time is 40 minutes; the feeding and pressing time of the single component of the large bearing is 6 seconds, and the caching time is 30 minutes; the feeding and assembly time of the swash plate takes 5s, and the caching time is 30 minutes; the assembly time of the screw locking mechanism takes 4.5 seconds, and the caching time is 30 minutes; the working time of the dust suction device is 3 seconds, and finally the finished oil cylinder is discharged from the rear-end assembly unit 7, which takes 4 seconds, and the caching time is 12 minutes; the final assembling turntable time is 2 seconds. Each step of the above process is carried out synchronously, and the normal assembly time for a single oil cylinder takes 6 seconds.

[0039] Furthermore, a feeding and transplanting mechanism, a feeding, pushing, and discharging mechanism, a stringing and feeding rotating table, and a discharging, receiving, and caching mechanism are arranged around the rear-end assembly workbench 71. The discharging, receiving, and caching mechanism can cooperate with the vision detection unit 3 for material detection; there are 12 groups of station rotating bins on the rear-end assembly workbench 71 to meet the caching within a certain period of time. The rear-end assembly unit 7 is connected to the discharging conveying line for butt-joint feeding to the upper feeding position, and is butt-jointed with the shaft assembly feeding of the previous process. The operator takes out the oil cylinder housing from the material box manually. The housing feeding unit 5 is equipped with a chip blowing and dust suction device, and there is a protective safety frame during feeding, and early warning for material shortage.

[0040] All other structures are the same as those in Embodiment 1.

[0041] Preferably, the overall fully automatic assembly device can meet the non-interfering caching and discharging of the components of 120 oil cylinders. If the caching capacity needs to be increased, the length of the line can be increased. By periodically setting each working point of the fully automatic assembly device, it can be correspondingly obtained that the discharging of the front-end assembly unit 2 is finally assembled and then discharged from the rear-end assembly unit 7 after a certain fixed time. Therefore, a detection system operation logic is set inside the vision detection unit 3 to realize the tracking detection of a single product. When defective products appear, it is convenient to trace back in time, determine the assembly failure station, and realize the refined management of the fully automatic assembly line. Figure 7As shown in the automatic assembly timing diagram of the oil cylinder, it can be clearly seen that the working time periods of each assembly station in this embodiment are combined with the detection logic of the vision detection unit 3 and the overall fully automatic assembly process, achieving a significant improvement in the detection efficiency of a single vision detection unit 3 and facilitating the traceability inspection of products.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A fully automatic assembly device with visual detection, characterized in that: including a front-stage feeding unit (1); a front-stage assembly unit (2) connected to the front-stage feeding unit (1); a rear-stage assembly unit (7) disposed at the discharge end of the front-stage assembly unit (2); a housing feeding unit (5) disposed at the feeding end of the rear-stage assembly unit (7); a rear-stage feeding unit (6) disposed at the feeding end of the rear-stage assembly unit (7); a blanking conveying unit (4) disposed on the rear-stage feeding unit (6); and a vision inspection unit (3) disposed between the front-stage assembly unit (2) and the rear-stage assembly unit (7) and above the blanking conveying unit (4); wherein the assembled product is set as an oil cylinder, the front-stage assembly unit (2) is used for assembling the plunger assembly of the oil cylinder, the rear-stage assembly unit is used for assembling complete oil cylinder fittings on the basis of the plunger assembly, and the blanking conveying unit (4) is divided into a qualified blanking production line and a defective product production line according to the press-fitting force and displacement detection data of the oil cylinder; The vision inspection unit (3) includes a material conveyor belt (31) disposed between the front-stage assembly unit (2) and the rear-stage assembly unit (7), and a vision inspection module (32) disposed on the material conveyor belt (31) for inspecting the plunger parts, i.e., intermediate products, discharged from the front-stage assembly unit (2) and the oil cylinder parts, i.e., complete assembled products, discharged from the rear-stage assembly unit (7).

2. The fully automatic assembly device with visual detection according to claim 1, characterized in that: The front-stage feeding unit (1) includes a plunger feeding assembly (11) disposed at the plunger loading station of the front-stage assembly unit (2), a gear feeding assembly (12) disposed at the gear stringing station of the front-stage assembly unit (2), and a first bearing feeding assembly (13) disposed at the bearing stringing station of the front-stage assembly unit (2).

3. The fully automatic assembly device with visual detection according to claim 2, characterized in that: The front-stage assembly unit (2) includes a front-stage assembly workbench (21), a first bearing feeding mechanism (22), a gear feeding mechanism (23), a plunger rod feeding mechanism (24), a front-stage press-fitting mechanism (25), a defective product blanking mechanism, and a front-stage blanking mechanism (26) disposed around the front-stage assembly workbench (21); the first bearing feeding mechanism (22), the gear feeding mechanism (23), the plunger rod feeding mechanism (24), the front-stage press-fitting mechanism (25), and the front-stage blanking mechanism (26) respectively correspond to the front-stage bearing feeding station, the gear feeding station, the plunger feeding station, the plunger rod assembly station, the defective product discharge station, and the front-stage discharge station of the front-stage assembly workbench (21).

4. The fully automatic assembly device with visual detection according to claim 3, characterized in that: The housing feeding unit (5) includes a housing feeding conveyor mechanism (51) disposed at the housing loading station of the rear-stage assembly unit (7), a dust suction bin (52) disposed at the feeding end of the housing feeding conveyor mechanism (51), and a dust suction mechanism (53) disposed on the dust suction bin (52).

5. The fully automatic assembly device with visual detection according to claim 4, characterized in that: The rear-stage feeding unit (6) includes an oil seal feeding mechanism (61) disposed at the oil seal loading station of the rear-stage assembly unit (7), a second bearing feeding assembly (62) disposed at the bearing loading station of the rear-stage assembly unit (7), and a locking feeding assembly (63) disposed at the locking loading station of the rear-stage assembly unit (7); a chip blowing mechanism (631) is disposed on the locking feeding assembly (63).

6. The fully automatic assembly device with visual detection according to claim 5, characterized in that: The rear assembly unit (7) includes a rear assembly workbench (71), and a plunger feeding mechanism (72), a housing feeding mechanism (73), an oil seal feeding mechanism (74), a rear pressing mechanism (75), a second bearing feeding mechanism (76), a locking feeding mechanism (77), an overall assembly dust suction mechanism (78), and an oil cylinder blanking mechanism (79) arranged around the rear assembly workbench (71); the plunger feeding mechanism (72), the housing feeding mechanism (73), the oil seal feeding mechanism (74), the rear pressing mechanism (75), the second bearing feeding mechanism (76), the locking feeding mechanism (77), the overall assembly dust suction mechanism (78), and the oil cylinder blanking mechanism (79) respectively correspond to the front plunger feeding station, the housing feeding station, the oil seal feeding station, the oil cylinder assembly station, the rear bearing feeding station, the locking feeding station, the dust suction station, and the oil cylinder blanking station of the rear assembly workbench (71).

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